exclude :test_atanh, "needs investigation"
exclude :test_cos, "needs investigation"
exclude :test_gamma, "needs investigation"
exclude :test_lgamma, "needs investigation"
exclude :test_log, "needs investigation"
exclude :test_sin, "needs investigation"
exclude :test_sqrt, "needs investigation"
exclude :test_tan, "needs investigation"
exclude :"test_override_bignum_to_f", "needs investigation"
exclude :"test_override_fixnum_to_f", "needs investigation"
